ASTROSAT CZTI

Data Quality Report

Orbit 01288

Creation date: 2024-06-27T14:10:26.583523
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G04_002T02_9000000230_01288cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01288cztM0_level2_quad_clean.evt
Size (bytes)1,243,693,44093,493,440
Size1.2 GB 89.2 MB
Events in quadrant A7,073,693637,728
Events in quadrant B8,259,789646,894
Events in quadrant C7,193,285626,286
Events in quadrant D14,734,238491,181

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253512
B0288891
C0257751
D0484091

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6134110.179328%
B6134520.847734%
C6134490.798826%
D6134233037.985002%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7429 6135 160 160 2.15% 2.61%
B 7429 6135 504 504 6.78% 8.22%
C 7429 6135 218 218 2.93% 3.55%
D 7429 6134 4184 4184 56.32% 68.21%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 233 21603 44.83 1838 1851 440.6
A 3 111 6040 9.51 1838 1851 440.6
A 11 79 5909 9.21 1838 1851 440.6
B 8 4 522835 1154.14 1928 1935 451.3
B 0 187 184022 403.44 1928 1935 451.3
B 10 213 66410 142.86 1928 1935 451.3
C 15 241 299838 632.35 1707 1763 471.4
C 9 54 150093 314.67 1707 1763 471.4
C 8 208 30665 61.31 1707 1763 471.4
D 13 169 7433542 17141.76 1404 1450 433.6
D 12 22 1600439 3687.99 1404 1450 433.6
D 10 84 224910 515.4 1404 1450 433.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter